<!DOCTYPE html>
<html lang="en">
	<head>
		<meta charset="utf-8">
		<title></title>
		<style>
			*{
				box-sizing: border-box;
			}
			html,
			body {
				height: 100%;
			}

			a {
				display: block;
				text-decoration: none;
			}

			a:hover {
				text-decoration: none;
			}
		</style>
	</head>
	<body>
		<table border="1" style="width: 100%;height: 100%;">
			<tr>
				<td colspan="2" style="height: 80px;">
					<h2>Top</h2>
				</td>
			</tr>
			<tr>
				<td style="width: 240px;">
					<div>
						<h4>系统管理</h4>
						<a href="01.html" target="content">测试1</a>
						<a href="02.html" target="content">测试2</a>
						<a href="03.html" target="content">测试3</a>
					</div>
				</td>
				<td>
					<iframe name="content" src="welcome.html" width="100%" height="100%"></iframe>
				</td>
			</tr>
			<tr>
				<td colspan="2" style="height: 80px;text-align: center;">
					<h4>版权所有</h4>
				</td>
			</tr>
		</table>
	</body>
</html>
